The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2001
Filed:
Dec. 14, 1998
Applicant:
Inventors:
Hideshi Katayama, Taito-ku, JP;
Kan Saito, Taito-ku, JP;
Assignee:
Kawatetsu Mining Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22F 1/00 ;
U.S. Cl.
CPC ...
B22F 1/00 ;
Abstract
A nickel ultrafine powder which is characterized by having an average particle diameter of 0.2 to 0.6 &mgr;m and containing coarse particles whose particle diameter is larger than 2.5 times the average particle diameter in an amount less than 0.1% in terms of number-size distribution. It is produced from nickel chloride vapor by reduction with hydrogen in the gas phase. It gives thin internal electrodes (which contributes to high capacity) with only a few short circuits across them.